Predicted to enable Notch binding activity; ubiquitin protein ligase activity; and ubiquitin protein ligase binding activity. Acts upstream of or within several processes, including Notch signaling pathway; cellular response to leukemia inhibitory factor; and negative regulation of T cell differentiation. Predicted to be located in cytosol and nuclear body. Predicted to be active in nucleoplasm. Is expressed in several structures, including alimentary system; cardiovascular system; central nervous system; genitourinary system; and sensory organ. Orthologous to human DTX1 (deltex E3 ubiquitin ligase 1). [provided by Alliance of Genome Resources, Apr 2022]